Bow riser



FIG. 1 is a side, perspective view of a bow riser showing my new design;

FIG. 2 is a left side elevational view thereof; and,

FIG. 3 is a right side elevational view thereof.

The broken line showing of a bow, in FIGS. 1-3, is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a bow riser, as shown and described. 